This is the chip ( b2100a - 13 - f ) that is soldered on to the circuit board within the module , which controls the power and is most probably the issue if yours has no signs of power.

With basic soldering skills this can be achieved by following instructions from YouTube

We do not hold any responsibility for the repair not working , any repair is done at your own risk .

Good luck

(This is a clearance sale so you will receive over 120 chips . )